Lock



Dec. 19, 1922. .l 1,439,332.

A. SCHULTE.

lLOCK.

FILED MAY 14, 19231. 2 SHEETS-SHEET 1.

Fig@ h k i vu L m" Figs ' 121 Ven far 2 2 SHEETS-SHEET A. SCHULTE.

l' HUI Dec. 19, 19,22.

Figli Patented Dec. 19, ILQZ` tisana ALFRED 'sonni-LTE, ,or vnnsnnru; ernizifrmmivl fLooK. -I

Appncationmea May 14, i921. j semaine) 469,769.

siteiv'iiin'UNDER THE rnovisions er THE ACT ori/maarre, 192i,r 4.1 STAT. 1;., 131.3.)` y

Taall {LU/Lam #may 00ncem.1 v

Beit known that 1ALFR1ED SGHULTE, a citizen Aof Germany, residing at Velbert, Rhenish Prussia, Germany, have invented certain new and usefulL Improvementsin Locks (for which I have iiledapplications y.for patent in Germany, June 23, 1919; Netherlands, June 12, 1920; England,'J une 30, 1920,) and of` which the *followingv isa specication.- y l, p v.

My invention relates to a latch-lock the latch-boltof which serves simultaneously as a lock-bolt the same beingeapable of being` advanced beyond its latchingv position into a locking position. The-,main object ofmy;

invention istoraise the safety of` a lock or this kind by the combination withit of two kcylinderor barrel-locks withtumblerand setting-pins, and of a vspecial tumbler for theylatch-bolt in such a manner that the latclrbolt can be advanced from itslatch# ingr position into its locking` p'ositionand vice versa only by ineansof the Cylinder? locks which are operable each yfrom onevjside of, the door, whereas its retraction from the latching position intothe lock-casing may be yeffected by the cylinder-locks aswell as by a 'handle arranged at the'innersiile of the door.. By this combinatioii an absolute safety. against unauthorized opening'f-ifrom both sidesot the door is afforded while the lock itself is verysimple in construction'.

To more sim lili m f combined lock l ar-y pling,` a common driving member alternately with either of the two cylinder-locks are it is possibleto position one of the cylinder,- locks wholly or partly within the casing of the latchlocln `One embodiment ofthel invention is shown by way oi examplein the annexed drawing,

wherein: i f i Fig'. 1A shows the lockwithr the cover jremoved and with the latch-belt withdrawn intoV the easing,

Fig. 2 shows the lock iny its latching position, Fig. 3 is' a transverse AeBinFigQ, f Fig. 1T' is a longitudinal section on the line C-'D in Fig. 2, v

with the latenten Thus avoided.y Furthermoreby this arrangement section on the line Fig fis atransverse seetionon the lline :l-#Fin F1g-2, and f Fig. 6 is a view similarltofFig. lbut withy the latch-boltyadvanced to its lockingposition. 1

The b ox'like the flange-"b and' a plate .c fastened. on the tance' from the bottomiby means of suitable boltsfnot shown onthe'drawing. e isthe klatch-bolt .which servesfslmultaneouslygas a rlatch-bolt-atfits rear end'sliding on thebot- 6o casing a of the lock comprises .bottomof the casing w whichfis closed by-l-rr i,

meansof. the lcover d heldyatv the proper distomyof the lock by meansy olf a iap -fbenthfr up at right angles: A spring g acting on the rear-'endet the .latch-bolt e tends to `hold kthe same in its latchi'ng.=position,` that is to press lit alwaysforward "into this position.

"lhe latch-bolt .however is capable oi ybeing advanced beyoi'idits latching position linto 1v a locking position,wherein it abuts against the iange of the casing. To limit the for ward nxovement of 4thedatch"bolt atlth'eI latching position and to secure it in the ad` vant-ed or locking` position, .atuinbler 1I pivf oted at one end on a stationarypin his pros vided-which tumbler hasia springc prlessf ing against the upper wall of the ca singand at its "other end and 0n its lower` edge :has two vlugs `Zand/m one of which engages bef, tween twoy upwardly converging ls topsfa7 0 mounted on the bolt e. The tumbler .lug Z which secures the `latch-bolt inI its locking positienlFgg) is so formed that inco-y acting-with the stopsa, o it prevents motion of the bolt ein both directions, while the second tumblery lug m has suchv a ormtha-t-" y it prevents movement `of the latch-bolt past its latching position (Fig. 2) but allows the latch-bolt to be withdrawn into lthe casingal (Fig, 1),. thestop non the bolt c owingto the tumblerl lugrm beingA bevelled on one side being,` capable of lifting thetumbler on're-` one,p, can be operated from linsidey and the other, q,*from' outside. theidoor. 'The formery one, p, which is situated the nearer p i to thev front end of the lock extends into latch-bolt @has a suitable gap e1 in which moves a key-bit-like driving pawl s fas' the casing a through a hole in the bottom of the latter and' is fastened by being screwed at i on to the bottom of the lock casing a or on to the 'lock .platel c. The

lz' vistirstoft all released andtlien vthelatcli iS .shot forward to its locking position or f from this back to its latching position orY iinally retracted into the lock casing-a.

The second lcylinder-lock g whichv is arranged farther back, that is, is offset with respect to the first lone p, is inserted from the outside ofy the door into a hole in the sameland is held in place, for example, by

being screwed tothe lock 4cover el. LThe inner or rotary cylinder of this second cylinder-.lock g' is'also coupled to a key-bit- Vlike driving pawl fv. which is rotatably mounted `in the lock cover cl, the two kstops n, o .onv the Vlatch-bolt e serving as bolt- 4'stops engaging said second driving pawl o so that, when the latter *is turned by means of the cylinder-lock g, the latch-bolt, aiter releasingo theV tumbler' z', can also be advanced from its latching position to` the locking position and Vvice versa and iinally withdrawn intoy the lock casing.

.ln the bottom of the lock casing t there is, turnablymounted a handle orv knob w with which is connected a driving pawl or lever acting on the liap f of the latchbolt e only. By turning the knob w the latch-bolt may be Withdrawn from its latching position into the lock-casing, but owing to the. driving pawl m being una-ble to act upon thetumbler z' it is `opuite impossible to retract the bolt e from its locking position by means of the handle w.

Claims l y 1. ln a latch-lock, in combination: a latch-bolt'adapted to act simultaneously as al lock-bolt'and capable of being advanced beyond its latcli'ing position into a locking position, tumblers adapted to limit the i'or-` waicl'-moveinent or' the latch-bolt at its latching position and also to secure the latch-bolt in its locking position, two cyl-y inder-loclrs'operable from opposite sides of the latch-lock, driving members adapted to be coupled with said cylinder-locks and to co-act, with said tumblers for releasing them and simultaneously with said latchbolt for advancing same from its latching position to its locking position and vice versa and for retracting the latch-bolt into the lock-easing also, a handle, land a driver coupled with said handle and adapted to act uponvsaid latch-bolt only lfor retracting i same from its latching position.

l` 2. ln a latch-lock, in combination: a latch-bolt capable oi being advanced beyond its latching vposition' into a locking position, tumblers adapted to limit the vforward movement of the latch-bolt at its latching position andalso to secure said latch-bolt in its locking position, two cylinder-locks operable trom1 opposite sides of said latchlock, said cylinder-locks being arranged in staggered relation, two vdriving members 1 one 'each coupled with one of said two cylvinder-'loclis and'adapted to co-act with said tumblers for releasing same `and simultaneously with said latch-bolt for movingthe latter to its various positions, a handle,

adapted to co-act with said stops for limiting the :forward ino vement ot said latch-bolt at its iatcliing position `and also -i'or securing said latch-bolt inl its locking position, the rear one oi.' said tv-.fo'tuinbier lugs being bevelled'on one side ior automatically releasing said tuiiibler on retracting said latchbolt from its latcliing position, two cylinderlocks operable from opposite sides oi: the latch-lock, two driving members coupled ivitlimsaid.cylinder-locks and. adapted to coact with saidtumbler for releasing saine and simultaneouslywith `said latch-bolt for advancing saine irom its latcliiiig position to its locking position and vice versa and for retracting tliesaid latch-bolt into the lock casing also, aliandle, and a driver coupled with said handle and adapted toact upon said latch-bolt only for retracting saine from its latching position. y

4l. ln a latch-lock, in combination: a latchbolt capable of being advanced beyond its l'atchi'ng vposition into a locking position, said 'latch-bolt being provided with two stops consisting ot ytwo upwardly converging projections, a tumbler provided with two lugs and adapted to co-act withsaid stops for limitingthe forward movement,r oiE said latch-bolt at its latching position and valso 'for securing the latch-bolt in its locking posit-ion, the reaivone of said two lugs being bevelled on one side for automatically releasino said tumbler on retractine' said latch-1 bolt ironi its latcliiiigpositiointwo cylinderlocks operable 'from opposite sides of the latch-loch, said cylinder-locks being arranged in staggered relation, two driving nembers one each coupled with one of said `cylinder locks and adapted torelease said ,and a driving member coupled with said tumbler and simultaneously to move said latch-bolt to its various positions, the driv-k ing member coupled with the 'forward one of said two cylinder-locks being situated in a recess of said latch-bolt, the upper edge of lsaid recessforming notches for the -engagement of said driving member, the driving al driving member coupled with said handlev and adapted to act upon said latch-bolt only for retracting same from its latching position.

5. ln a latch-lock, in combination: a latchbolt capable of being advanced beyond its late-hing position into a locking position, a tumbler adapted to limit the forward movement of said latch-bolt at its latching position and also to secure said latch-bolt in its locking position, two cylinder-locks fastened to the walls of the latch-lock casing and operable .from opposite sides of the latch-lock, key-bit-like driving paw'ls coupled with the lrotary cylinders of said two cylinder-locks and adapted to co-act with said tumbler for releasing same and simultaneously with said latch-bolt for moving same to its various positions, and a handle on one side of the latch-lock, and a lever-arm coupled with said handle and adapted to act upon said latch-bolt only for retracting same from its latchingposition.

6. ln a latch-lock, in combination: a latchbolt capable of being advanced beyond its latching position into a locking position, a

tumbler adapted to limit the forward movement of said latch-bolt at its latching position and also to secui'e said latch-bolt in its locking position, two cylinder-locks fastened one to the bottom and the other to the cover of*` the latch-lock casing, and operable from opposite sides of the latch-lock, said two cylinder-locks being arranged in staggered relation, one of said cylinder-locks eX- tending into the casing of said door lock, driving members coupled with said cylinderlocks and adapted-to co-act with said turnbler for releasing same and simultaneously with said latch-bolt for moving same into its various positions, a handle arrangedon one side of said latch-lock, and a driving vmember coupled with said handle and adapted to act upon said latch-bolt only for re-y tracting same from its latching position.

7.` In a door-lock, in combination: a latchbolt capable of being advanced beyond its latching position into `a locking position, said latch-bolt being provided with two stops, consisting of twor upwardly converging proj eetions, a tumbler provided with two lugs and adapted to co-act with said twov stops for limiting the forward movement of saidlatch-bolt atjits latching position and also for securing the latch-bolt in its locking position, the rear one of said two lugs being bevelled at its forward edge, two cylinder- `locks operable from opposite sides of the latch-lock, said two cylinder-locks being arranged in staggered relation, the forward one of said cylinder-locks extending into the casing of the latch-lock, a key-bit-lilre driving pawl fastened directly to the rotary cylinder of said forward cylinder-lock, said driving pawl being situated in a recess of said latch-bolt, the upper edge of said recess c forming notches for the engagement of said driving` pawl, a second lrey-bit-like driving pawl rotatably mounted in the cover of the latch-lock casing and coupled with the rotary cylinder of the rear one ofsaid two cylinder-locks, said second driving pawl being' situated in the plane of said two' bolt-stops and adapted to engage sainein driving the said latch-bolt, both said driving pawls being adapted to release said tum` bler and to move said `latch-bolt to its various positions, a handle arranged on one side of the latch-lock, and a driving lever coupled with said handle and adapted to act upon said latch-bolt only for retracting same from its latching position.

ln testimony whereof I affix my signature.

A. SCHULTE. 

